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Finding the Fourth Proportional to 356,513.74, 534,771.84 and 90,274.14

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Solution

The fourth proportional to 356,513.74, 534,771.84 and 90,274.14 is: 135,411.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,513.74 : 534,771.84 = 90,274.14 : x
  2. Step 2: Convert to fraction form
    356,513.74/534,771.84 = 90,274.14/x
  3. Step 3: Cross multiply
    356,513.74x = 534,771.84 × 90,274.14
  4. Step 4: Simplify right side
    356,513.74x = 48,276,067,952.22
  5. Step 5: Solve for x
    x = 48,276,067,952.22/356,513.74
  6. Step 6: Final answer
    x = 135,411.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.